Robert sees an abandoned, burnt ship in the water.
Robert: Uh, guys? We got a ghost ship at 9:00. She's pretty burnt.
Nissa: Uh, should we check for survivors?
Robin: Not likely.
Robert: I think I can make out the figurehead. I think it's a ram.
Nissa: What?!?
Luffy: WHAT?!?!
Here are her angles.